XPS and EXAFS studies of the reactions of Co(III) ammine complexes with GaAs surfaces
The chemisorption of Co(II) and Co(III) complexes onto GaAs surfaces has been investigated by x-ray photoelectron spectroscopy (XPS), x-ray absorption spectroscopy, and radiotracer techniques. XPS of (100)-oriented n-GaAs single crystals exposed to aqueous (pH > 10) (Co{sup III}(NH{sub 3}){sub 5}...
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| Veröffentlicht in: | Journal of the American Chemical Society 1990-06, Vol.112 (13), p.5123-5136 |
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| container_title | Journal of the American Chemical Society |
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| creator | TUFTS, B. J ABRAHAMS, I. L CALEY, C. E LUNT, S. R MISKELLY, G. M SAILOR, M. J SANTANGELO, P. G LEWIS, N. S LAWRENCE ROE, A HODGSON, K. O |
| description | The chemisorption of Co(II) and Co(III) complexes onto GaAs surfaces has been investigated by x-ray photoelectron spectroscopy (XPS), x-ray absorption spectroscopy, and radiotracer techniques. XPS of (100)-oriented n-GaAs single crystals exposed to aqueous (pH > 10) (Co{sup III}(NH{sub 3}){sub 5}X){sup n+} (X = NH{sub 3}, Br{sup {minus}}, HO{sup {minus}}) solutions indicated the deposition of a Co(II)-oxo overlayer of approximate stoichiometry Co(OH){sub 2}, with a coverage of (0.2-2.4) {times} 10{sup {minus}8} mol of Co/cm{sup 2} projected area of GaAs. The reaction stoichiometry between Co(III) and GaAs was confirmed by quantitative chemical and x-ray fluorescence analysis, as well as by XPS analysis. X-ray absorption spectroscopy indicated that the oxidation state of the adsorbed Co (from either Co(III) or Co(II) complexes) from aqueous pH = 12 electrolytes was Co(II). |
| doi_str_mv | 10.1021/ja00169a021 |
| format | Article |
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J ; ABRAHAMS, I. L ; CALEY, C. E ; LUNT, S. R ; MISKELLY, G. M ; SAILOR, M. J ; SANTANGELO, P. G ; LEWIS, N. S ; LAWRENCE ROE, A ; HODGSON, K. O</creator><creatorcontrib>TUFTS, B. J ; ABRAHAMS, I. L ; CALEY, C. E ; LUNT, S. R ; MISKELLY, G. M ; SAILOR, M. J ; SANTANGELO, P. G ; LEWIS, N. S ; LAWRENCE ROE, A ; HODGSON, K. O</creatorcontrib><description>The chemisorption of Co(II) and Co(III) complexes onto GaAs surfaces has been investigated by x-ray photoelectron spectroscopy (XPS), x-ray absorption spectroscopy, and radiotracer techniques. XPS of (100)-oriented n-GaAs single crystals exposed to aqueous (pH > 10) (Co{sup III}(NH{sub 3}){sub 5}X){sup n+} (X = NH{sub 3}, Br{sup {minus}}, HO{sup {minus}}) solutions indicated the deposition of a Co(II)-oxo overlayer of approximate stoichiometry Co(OH){sub 2}, with a coverage of (0.2-2.4) {times} 10{sup {minus}8} mol of Co/cm{sup 2} projected area of GaAs. The reaction stoichiometry between Co(III) and GaAs was confirmed by quantitative chemical and x-ray fluorescence analysis, as well as by XPS analysis. X-ray absorption spectroscopy indicated that the oxidation state of the adsorbed Co (from either Co(III) or Co(II) complexes) from aqueous pH = 12 electrolytes was Co(II).</description><identifier>ISSN: 0002-7863</identifier><identifier>EISSN: 1520-5126</identifier><identifier>DOI: 10.1021/ja00169a021</identifier><identifier>CODEN: JACSAT</identifier><language>eng</language><publisher>Washington, DC: American Chemical Society</publisher><subject>AMMINES ; ARSENIC COMPOUNDS ; ARSENIDES ; CHEMICAL REACTIONS ; CHEMISORPTION ; Chemistry ; COBALT COMPLEXES ; COMPLEXES ; DATA ; DATA ANALYSIS ; Exact sciences and technology ; EXPERIMENTAL DATA ; GALLIUM ARSENIDES ; GALLIUM COMPOUNDS ; General and physical chemistry ; INFORMATION ; MATERIALS ; MATERIALS SCIENCE ; MEASURING INSTRUMENTS ; MEASURING METHODS ; NUMERICAL DATA ; PNICTIDES ; SEMICONDUCTOR MATERIALS ; SEPARATION PROCESSES ; Solid-liquid interface ; SORPTION ; Surface physical chemistry ; TRANSITION ELEMENT COMPLEXES 360603 -- Materials-- Properties</subject><ispartof>Journal of the American Chemical Society, 1990-06, Vol.112 (13), p.5123-5136</ispartof><rights>1992 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,776,780,881,27903,27904</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=4993540$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/biblio/6882625$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>TUFTS, B. J</creatorcontrib><creatorcontrib>ABRAHAMS, I. L</creatorcontrib><creatorcontrib>CALEY, C. E</creatorcontrib><creatorcontrib>LUNT, S. R</creatorcontrib><creatorcontrib>MISKELLY, G. M</creatorcontrib><creatorcontrib>SAILOR, M. J</creatorcontrib><creatorcontrib>SANTANGELO, P. G</creatorcontrib><creatorcontrib>LEWIS, N. S</creatorcontrib><creatorcontrib>LAWRENCE ROE, A</creatorcontrib><creatorcontrib>HODGSON, K. O</creatorcontrib><title>XPS and EXAFS studies of the reactions of Co(III) ammine complexes with GaAs surfaces</title><title>Journal of the American Chemical Society</title><description>The chemisorption of Co(II) and Co(III) complexes onto GaAs surfaces has been investigated by x-ray photoelectron spectroscopy (XPS), x-ray absorption spectroscopy, and radiotracer techniques. XPS of (100)-oriented n-GaAs single crystals exposed to aqueous (pH > 10) (Co{sup III}(NH{sub 3}){sub 5}X){sup n+} (X = NH{sub 3}, Br{sup {minus}}, HO{sup {minus}}) solutions indicated the deposition of a Co(II)-oxo overlayer of approximate stoichiometry Co(OH){sub 2}, with a coverage of (0.2-2.4) {times} 10{sup {minus}8} mol of Co/cm{sup 2} projected area of GaAs. The reaction stoichiometry between Co(III) and GaAs was confirmed by quantitative chemical and x-ray fluorescence analysis, as well as by XPS analysis. X-ray absorption spectroscopy indicated that the oxidation state of the adsorbed Co (from either Co(III) or Co(II) complexes) from aqueous pH = 12 electrolytes was Co(II).</description><subject>AMMINES</subject><subject>ARSENIC COMPOUNDS</subject><subject>ARSENIDES</subject><subject>CHEMICAL REACTIONS</subject><subject>CHEMISORPTION</subject><subject>Chemistry</subject><subject>COBALT COMPLEXES</subject><subject>COMPLEXES</subject><subject>DATA</subject><subject>DATA ANALYSIS</subject><subject>Exact sciences and technology</subject><subject>EXPERIMENTAL DATA</subject><subject>GALLIUM ARSENIDES</subject><subject>GALLIUM COMPOUNDS</subject><subject>General and physical chemistry</subject><subject>INFORMATION</subject><subject>MATERIALS</subject><subject>MATERIALS SCIENCE</subject><subject>MEASURING INSTRUMENTS</subject><subject>MEASURING METHODS</subject><subject>NUMERICAL DATA</subject><subject>PNICTIDES</subject><subject>SEMICONDUCTOR MATERIALS</subject><subject>SEPARATION PROCESSES</subject><subject>Solid-liquid interface</subject><subject>SORPTION</subject><subject>Surface physical chemistry</subject><subject>TRANSITION ELEMENT COMPLEXES 360603 -- Materials-- Properties</subject><issn>0002-7863</issn><issn>1520-5126</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1990</creationdate><recordtype>article</recordtype><recordid>eNotjE9LwzAYxoMoOKcnv0AQD3qovkmatjmOsc3CQGEOditv04RmrM1oMtRvb3Genn8_HkLuGbww4Ox1jwAsUzj6CzJhkkMiGc8uyQQAeJIXmbgmNyHsx5jygk3Idvexodg3dLGbLTc0xFPjTKDe0tgaOhjU0fn-r5j7p7Isnyl2nesN1b47Hsz3CH-52NIVzgINp8GiNuGWXFk8BHP3r1OyXS4-52_J-n1VzmfrxHNQMclThcw2mWBM1rIGltYoapOL3DaiMI0CzCAdNyWtwRrznDU1l6CtKpAJLqbk4fzrQ3RV0C4a3Wrf90bHKisKnnE5Qo9n6IhB48EO2GsXquPgOhx-qlQpIVMQv-GwXLs</recordid><startdate>19900620</startdate><enddate>19900620</enddate><creator>TUFTS, B. J</creator><creator>ABRAHAMS, I. L</creator><creator>CALEY, C. E</creator><creator>LUNT, S. R</creator><creator>MISKELLY, G. M</creator><creator>SAILOR, M. J</creator><creator>SANTANGELO, P. G</creator><creator>LEWIS, N. S</creator><creator>LAWRENCE ROE, A</creator><creator>HODGSON, K. O</creator><general>American Chemical Society</general><scope>IQODW</scope><scope>OTOTI</scope></search><sort><creationdate>19900620</creationdate><title>XPS and EXAFS studies of the reactions of Co(III) ammine complexes with GaAs surfaces</title><author>TUFTS, B. J ; ABRAHAMS, I. L ; CALEY, C. E ; LUNT, S. R ; MISKELLY, G. M ; SAILOR, M. J ; SANTANGELO, P. G ; LEWIS, N. S ; LAWRENCE ROE, A ; HODGSON, K. O</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-o209t-749a1fd63115b5b014ba3be737fd38ed90a60415b95feaba771db250cf98a1323</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1990</creationdate><topic>AMMINES</topic><topic>ARSENIC COMPOUNDS</topic><topic>ARSENIDES</topic><topic>CHEMICAL REACTIONS</topic><topic>CHEMISORPTION</topic><topic>Chemistry</topic><topic>COBALT COMPLEXES</topic><topic>COMPLEXES</topic><topic>DATA</topic><topic>DATA ANALYSIS</topic><topic>Exact sciences and technology</topic><topic>EXPERIMENTAL DATA</topic><topic>GALLIUM ARSENIDES</topic><topic>GALLIUM COMPOUNDS</topic><topic>General and physical chemistry</topic><topic>INFORMATION</topic><topic>MATERIALS</topic><topic>MATERIALS SCIENCE</topic><topic>MEASURING INSTRUMENTS</topic><topic>MEASURING METHODS</topic><topic>NUMERICAL DATA</topic><topic>PNICTIDES</topic><topic>SEMICONDUCTOR MATERIALS</topic><topic>SEPARATION PROCESSES</topic><topic>Solid-liquid interface</topic><topic>SORPTION</topic><topic>Surface physical chemistry</topic><topic>TRANSITION ELEMENT COMPLEXES 360603 -- Materials-- Properties</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>TUFTS, B. J</creatorcontrib><creatorcontrib>ABRAHAMS, I. L</creatorcontrib><creatorcontrib>CALEY, C. E</creatorcontrib><creatorcontrib>LUNT, S. R</creatorcontrib><creatorcontrib>MISKELLY, G. M</creatorcontrib><creatorcontrib>SAILOR, M. J</creatorcontrib><creatorcontrib>SANTANGELO, P. G</creatorcontrib><creatorcontrib>LEWIS, N. S</creatorcontrib><creatorcontrib>LAWRENCE ROE, A</creatorcontrib><creatorcontrib>HODGSON, K. O</creatorcontrib><collection>Pascal-Francis</collection><collection>OSTI.GOV</collection><jtitle>Journal of the American Chemical Society</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>TUFTS, B. J</au><au>ABRAHAMS, I. L</au><au>CALEY, C. E</au><au>LUNT, S. R</au><au>MISKELLY, G. M</au><au>SAILOR, M. J</au><au>SANTANGELO, P. G</au><au>LEWIS, N. S</au><au>LAWRENCE ROE, A</au><au>HODGSON, K. O</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>XPS and EXAFS studies of the reactions of Co(III) ammine complexes with GaAs surfaces</atitle><jtitle>Journal of the American Chemical Society</jtitle><date>1990-06-20</date><risdate>1990</risdate><volume>112</volume><issue>13</issue><spage>5123</spage><epage>5136</epage><pages>5123-5136</pages><issn>0002-7863</issn><eissn>1520-5126</eissn><coden>JACSAT</coden><abstract>The chemisorption of Co(II) and Co(III) complexes onto GaAs surfaces has been investigated by x-ray photoelectron spectroscopy (XPS), x-ray absorption spectroscopy, and radiotracer techniques. XPS of (100)-oriented n-GaAs single crystals exposed to aqueous (pH > 10) (Co{sup III}(NH{sub 3}){sub 5}X){sup n+} (X = NH{sub 3}, Br{sup {minus}}, HO{sup {minus}}) solutions indicated the deposition of a Co(II)-oxo overlayer of approximate stoichiometry Co(OH){sub 2}, with a coverage of (0.2-2.4) {times} 10{sup {minus}8} mol of Co/cm{sup 2} projected area of GaAs. The reaction stoichiometry between Co(III) and GaAs was confirmed by quantitative chemical and x-ray fluorescence analysis, as well as by XPS analysis. X-ray absorption spectroscopy indicated that the oxidation state of the adsorbed Co (from either Co(III) or Co(II) complexes) from aqueous pH = 12 electrolytes was Co(II).</abstract><cop>Washington, DC</cop><pub>American Chemical Society</pub><doi>10.1021/ja00169a021</doi><tpages>14</tpages></addata></record> |
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| subjects | AMMINES ARSENIC COMPOUNDS ARSENIDES CHEMICAL REACTIONS CHEMISORPTION Chemistry COBALT COMPLEXES COMPLEXES DATA DATA ANALYSIS Exact sciences and technology EXPERIMENTAL DATA GALLIUM ARSENIDES GALLIUM COMPOUNDS General and physical chemistry INFORMATION MATERIALS MATERIALS SCIENCE MEASURING INSTRUMENTS MEASURING METHODS NUMERICAL DATA PNICTIDES SEMICONDUCTOR MATERIALS SEPARATION PROCESSES Solid-liquid interface SORPTION Surface physical chemistry TRANSITION ELEMENT COMPLEXES 360603 -- Materials-- Properties |
| title | XPS and EXAFS studies of the reactions of Co(III) ammine complexes with GaAs surfaces |
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